The concept describes the increase in time and cost that usually comes with increasing distance. It suggests that spatial interactions will tend to take place more often over shorter distances, as the associated costs and effort are lower. For instance, individuals are more likely to visit a local grocery store than one located several hours away, assuming similar products and pricing.
This principle plays a vital role in understanding patterns of human activity and spatial organization. Historically, it greatly influenced the location of cities, trade routes, and agricultural practices. Reduced impedance between locations can result in significant societal changes, such as increased trade, migration, and cultural exchange. Improvements in transportation and communication technologies directly affect this principle, effectively shrinking the perceived distance between places.